Question

6. Traces of lighter gases are found here ____________________

Answer 1

The thermosphere is the thickest layer in the atmosphere. Only the lightest gases—mostly oxygen, helium, and hydrogen—are found here. The thermosphere extends from the mesopause (the upper boundary of the mesosphere) to 690 kilometers (429 miles) above the surface of the Earth.

Answer 2

Answer:

thermospere is the answer